The earliest desert pools were simple rectangles: water for horses, then for humans. But mid-century modernists in Palm Springs reimagined them as sculptures. The kidney-shaped pool became an emblem of the era, its organic form contrasting with the rigor of the architecture. More recent designers have returned to the rectangle, but with variations: infinity edges that merge with the horizon, lap lanes that stretch the length of the property, and plunge pools barely larger than a hot tub but cooled by evaporative towers.
Placement matters more than shape. A pool on the north side of a house creates reflected light without glare. A pool on the south side requires shading to prevent overheating. A pool at the end of a view axis becomes a focal point; one tucked into a courtyard becomes a secret.